<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="showAddCateForm">添加分类</el-button>
        </el-col>
      </el-row>
      <tree-table class="tree-table" :data="catelist" :columns="columns" :selection-type="false" :expand-type="false" show-index index-text="#" border :show-row-hover="false">
        <template slot="isOk" slot-scope="scope">
          <i class="el-icon-success" style="color:lightgreen" v-if="scope.row.cat_deleted === false"></i>
          <i class="el-icon-error" style="color:red" v-else></i>
        </template>
        <template slot="order" slot-scope="scope">
          <el-tag type="primary" v-if="scope.row.cat_level === 0" size="mini">标签一</el-tag>
          <el-tag type="success" v-else-if="scope.row.cat_level === 1" size="mini">标签二</el-tag>
          <el-tag type="danger" v-else size="mini">标签三</el-tag>
        </template>
        <template slot="opt">
          <el-button type="primary" icon="el-icon-edit" size="mini">修改</el-button>
          <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
        </template>
      </tree-table>
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <el-dialog title="添加分类" :visible.sync="addCateFormdialogVisible" width="50%" @close="addCateFormdialogVisibleClsoed">
      <el-form ref="addCateFormRef" :model="addCateForm" label-width="80px" :rules="addCateFormRules">
        <el-form-item label="分类名称:" prop="cat_name">
          <el-input v-model="addCateForm.cat_name"></el-input>
        </el-form-item>
        <el-form-item label="父级分类:">
          <el-cascader class="cascader" v-model="cateCascaderId" :options="ParentCateList" :props="cateCascaderProps" @change="cateCascaderChange"  clearable ></el-cascader>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addCateFormdialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addCateFormCause">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      catelist: [],
      queryInfo: {
        type: 3,
        pagenum: 1,
        pagesize: 5
      },
      total: 0,
      columns: [
        {
          label: '分类名称',
          prop: 'cat_name'
        },
        {
          label: '是否有效',
          prop: 'cat_deleted',
          type: 'template',
          template: 'isOk'
        },
        {
          label: '排序',
          prop: 'cat_level',
          type: 'template',
          template: 'order'
        },
        {
          label: '操作',
          type: 'template',
          template: 'opt'
        }
      ],
      addCateFormdialogVisible: false,
      addCateForm: {
        cat_name: '',
        cat_pid: '0',
        cat_level: '0'
      },
      addCateFormRules: {
        cat_name: { required: true, message: '请输入分类名称', trigger: 'blur' }
      },
      ParentCateList: [],
      cateCascaderProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      cateCascaderId: []
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        this.$message.error('获取商品分类失败')
      }
      // console.log(res.data);
      this.catelist = res.data.result
      this.total = res.data.total
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getCateList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getCateList()
    },
    async showAddCateForm() {
      const { data: res } = await this.$http.get('categories', { params: { type: 2 } })
      if (res.meta.status !== 200) {
        return this.$message.error('获取父级分类失败')
      }
      this.ParentCateList = res.data
      this.addCateFormdialogVisible = true
    },
    cateCascaderChange() {
        if(this.cateCascaderId.length>0){
            this.addCateForm.cat_pid=this.cateCascaderId[this,this.cateCascaderId.length-1]
            this.addCateForm.cat_level=this.cateCascaderId.length
            return
        }else{
            this.addCateForm.cat_level='0'
            this.addCateForm.cat_pid='0'
        }
    },
    addCateFormdialogVisibleClsoed(){
         this.$refs.addCateFormRef.resetFields()
        this.cateCascaderId=[]
         this.addCateForm.cat_level = '0'
      this.addCateForm.cat_pid = '0'
    },
    async addCateFormCause(){
       const{data:res}= await this.$http.post('post',this.addCateForm)
       if (res.meta.status !== 201) {
        return this.$message.error('添加分类失败')
      }

      this.$message.success('添加分类成功')
      this.getCateList()
      this.addCateDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>
.tree-table {
  margin-top: 15px;
  margin-bottom: 15px;
}
.cascader {
  width: 100%;
}
</style>
